摘要
将位于渤海湾的CII导管架海洋平台看作空间钢架结构,应用ANSYS软件对导管架平台进行动力学分析,得到平台的基本动力学参数;考虑随机波浪作用,应用蒙特卡罗模拟法和有限元方法对结构进行可靠性分析。以各管件壁厚为输入变量,以甲板位移响应、导管架最大应力和平台总质量为输出变量进行灵敏度分析,评价影响输出变量变化的主要因素并计算出导管架构件的可靠度。该研究对导管架海洋平台的安全性评价和结构设计具有参考意义。
A jacket type offshore platform CII located in Bohai Bay was modeled as a steel frame structure and the FEM software ANSYS was applied to study dynamic characteristics of the structure.With the responses of the platform under random wave loadings,the structural reliability analysis using Monte Carlo Method and FEM were carried out.The wall thicknesses of pipe elements were chosen to be the input variable.The displacement response of the deck,the maximum stress of the jacket and total mass of the platform were taken as the output variables.The main factors affecting the output variables were appraised in the course of sensitivity analysis,meanwhile the jacket reliability was worked out.The results show that the proposed method is significative for the security evaluation and structure design of a jacket type offshore platform.
出处
《石油工程建设》
2006年第6期22-26,共5页
Petroleum Engineering Construction
基金
青岛市科技发展计划项目(05-2-JC-58)
